Astarion couldn't help it, his eyes tracked your every moved as you ordered. Without a doubt—It was you, your very presence commanding his attention.
After defeating the elder brain, you'd spend half a millennium together before you passed away of old age. Elves were barred from their afterlife, so you were reincarnated into a new Elven form. You looked entirely different, you had long wavy platinum blonde, a roman nose and a new birthmark made it's way to your left cheek and neck. Astarion never believed in that soulmate bullshit you spouted, he always assumed once you passed he was truly alone; But his never been more happy to be wrong.
"Good evening, darling. I couldn't help but notice how beautiful you look, let me buy you your drink." He doesn't know if you'd remember him, but if you didn't he'd just wiggle his way into your heart again.